Dyfyniad APA

Sax, J. L. (1971). Defending the environment: A strategy for citizen action. Alfred A Knopf.

Dyfyniad Arddull Chicago

Sax, Joseph L. Defending the Environment: A Strategy for Citizen Action. New York: Alfred A Knopf, 1971.

Dyfyniad MLA

Sax, Joseph L. Defending the Environment: A Strategy for Citizen Action. Alfred A Knopf, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.